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are now learning that more than 60% of u.s. pipelines are aging, and according to the ntsb putting countless lives at risk. trace gallagher has more live from our west coast newsroom, trace. >> reporter: i've got to tell you, megyn the more we look into this the more concerning this gets, five days after the san bruno pipe explosion and we still have no idea what the exact cause was. the ntsb saying, look around the country. there could be thousands, maybe tens of thousands of pipes that are in the same condition the san bruno pipe was in. remember, if you want to look at these pictures, the san bruno pipes were all put in in the 1950s. this is 1948, look at the hillsides, the area, there are very few subdivisions put in here. they were all put in by the 1950s. now we'll show you almost of the same picture of what it looks like today, you'll get a better example. look at the sprawl. on top of all of those gas lines that were put in 50 years ago, and keep in mind that for a metal pipe 50 years is about the life expectancy, look at the sprawl in the same area. all those pipes that we
Search Results 0 to 0 of about 1